Heel-nailing machine



9' May 6, 1930. w. J. YOUNG 1,756,999

HEEL NAILING MACHINE Filed March 19,1927 2 Sheets-Sheet 1 mummumuwm May 6, 1930. I w. .1. YOUNG 6,

HEEL NAILINC: MACHINE Filed March 10, 1927 2 Sheets-Sheet 2 agreeable, and sometimes harmful-efiect on into which nails are-to be driven.

class or constructionof heel with which it may Patented May 6,1930

. UNIT ED WILLIAM- J. YOUNG, or YNrnMAssAoHUsErTs, hssIGNoR' To w." J ira- CHINERY COMPANY, or LYNN, MASSACHUSETTS, A conrom'rron or M ss'AoH'U- nnnt murrne ma ma I iApplication med March 10, 1927, Serial No; 174,145. a

p "This invention relates to machinesfor tattaehing heels .to shoes byfdriving nails through the heel seat from the inside :offthe shoe into the heel. This mode ofattachment is used for securing woodheels', although it is not necessarily limited as to l the character,

be used I Machines of this type are arranged to drive thenails upwardly andare provided with a' block having guideways for the nails and nail drivers, over which the heel" 'part of the shoe is placeclin an inverted "position; and'they also have rests or stops which are brought down on the tread surface, or; both the'tread surface and'the backof the. heel, after the shoe has been thus placed, to hold theheel' against the thrust of: the nails being driven.- In the machines of this character heretofore produced, the stop orrest'is thusbrought downby the machine operator-through the agencyof a treadle on which he-steps, and is held against the thrust of the driving oper v ation by his weight applied to the treadle, Thus the force with whichthe nail driving action' is opposedis uncertain and variable,'be-

' ing dependent-on'the' weight of the operator;

and when the machine operator is small I if they were drivenagainst a rigid yielding stop.

and a light. inan, lis' often insuflicient -ito. effect a tightiand attachment of the'h'eelto' the shoe. lnany event, even'if theloperator is a heavyman, his weight applies only a yielding force to the'stop, so that under the best conditions the nails lack the depth of penetration into the heel which would be secured In additioi'i to thiseifect'uponthe work, the operation of the prior machines has 'afdis- I the operator himself, dueto the jolt which is r transmitted by the driving'blow tothe treadle throughout the working day have a seriously r fatiguing effect on the operator;

One i'of the objects or this ihventi'ori' he been to overcome and removethe deficiencies and objectionable qualities erthe previous machines, abovef referreil to; aliltli is object mounted;

Fig.5 isl=a machinetaken on line 55 of Fig.1;

is accomplished by providingmeans for worklof'the machine and away from the treadleon which the operator stands; 7. Y 7

Another object isto facilitate adjusting or forshoes of different si'zesrand haViHg dif ferent styles of 'heel. This last'object is accomplished by providing a nail block and an assoc ated set of nail drivers in a unitxassenr blage-capa'bleof application as such unit to the machine, removal therefrom, and substichanging the machine to drive nails indif I ferent numbers and patterns, as is required tution of other'units having different char- 'acteristics of size and number and pattern. of

nail 'guid'ewaysj and drivers. q

Inthe following specificationand inthe drawings accompanyingthe'same, I have described and illustrated a heel nailing machine of the type above referred to containing the preferredembodiments of the present invention.- Y

:Fig.1 of thedrawings is a front elevation of such a machine, partly broken away in the lower portion toreduce its-height I Fig.2 is'fa cross sectionor sectional plan on flline 2'2jofFig.1;

fr Fig. 3yis a detail SQCtlOIl on line 3''3 -of -2;", 1

4 is-a" 'perspective, 1view' illustrating the :part'of themachine in'which the same is vertical central section; of the Fig. 6 is a detail sectional view showing th'efheel stop controlling cam in position for pressing thestop against the'heel of a shoe my new'nailrblock andjdriverassemblage and Like reference characters designate the we conical form with side portions-1, 2,-and a -rear-portion 3, anda 'bott'om web 4. The side portions at-theFbas'e fare extended forwardly as Webs and 6, containing hearings to support a shaft 7, to which a nail driver cam- 8 is secured, and a-drive shaft 9 geared to shaft 7 by gear wheels 10 and 11, and having a pulley 12 receiving a driving belt 13. The

sleeves 16 and 17, in .whichqa shaft 18 has its bearings. II g V A. guide block '19 is'inount'edacross the front of the frame, having webs 20. whichare bolted to the side members. A'sec'ond guide block 22 is similarly mqunted and secured below the guideblock. 19. These guide blocks have passages or guideways' vertically alined withone another in ailine which crossesthe axis of shaft 7; The passage m block 22 contains a slide or plunger-23, and that in the guide 19 contains a slidableblock'or head 24:,

plungeran cl engaged by a lock nut 25 similarly screwed upon the plunger. The lower end of plunger 23 carriesa trundle roll 26 engaging the cam'8. v

In the upper part of guide blook 1 9 is a recess 27 extending from front to rear and open at the front. The block or head projects at its upper end into said recess and has a flange 28 overlying thebottom thereof to arrest it" at the lower limit of its'reciprocating 111OV61 merit. The sides of the guide blockflank:

ing therecess have guideways 29 formed in partby removable top1pl'ates30, whiclr gurde ways receive flanges 31 r at opposite sides: of

the 'basepart abloclr32; Said block is;

at the same time a jack for 'supporti'ngthe shoe while ts heel is'beingnailed on, a"-rece'iver for thenails to bedriv en, and a guide for thena l drivers," r

For'convenient designationin this specification, 1t will be generally referred to as anail block. Said nail block contains longitudinal passages 33 conforming in number and arrangement, or pattern, to the 'n'ails' requiredforattachinga h'eel ofa given style to a shoe of a given size. Nail drivers or'driving rods 34of1wellknown character occupy ,these guideways and are adapted--tomove; freelyendwisetherein; Said'drivers project from the lower end of the'blocl; and are-all secured to a plate 35, conveniently by being screwed'j into tapped holes' in the plate in fined between theplate 35 and'th block,prefjerably extending somewhat into the block in sockets formed as enlargementsof the low er ends of the passages 33;; in order that 'the springs maybe longenough to-escape being i over-strainedwhen compressed and to'permit appro eli of'the'nlate135 al l theway'to the f he nail bloclr iffnecessarya These springs assure retraction of the drivers after they have been advanced to drive nails. Complete withdrawal of the nail drivers from the nail passages, when the nail block is rep moved from the machine, is prevented by a side portions land 2 are upwardly extended at the top of the frame to iform lugs 14 and 15 havinginwardly directed alined bearing stop screw- 37'passing through ,the plate into the blockand having a head somewhat v I Instead of having underlying the plate.

separate springs surrounding the nail drivers,

the'salme effect may befs'ecured in an equivalent way by providing a single ispring sur rounding the stop screw 37,01 in other ways.

Thenail block is loaded, prior to nailing the heel on a shoe, dropping the nails head first in the upper ends of the passages 33 when the drlvers are retracted;v as shown in. F 1g. 5.

i The shoe, {with its heel temporarily attached- .by adhesivefor otherwise,"is-placed on the V shaped for shoes of different sizes, and having nail passages in various numbers and variously patterned according-to thesize. of shoe andstyleof heel, may be substituted for one another. Such substitution-is made possible by the construction .ofthe I guide piece .19 with its recess 27. and guideways 29,a-nd the nail block: with its flanges 31 icomplemental to said "guideways. .WVhen the nail block is removed, thedriversfand-the plate 35 come with it,fsuchblock and'driv'ers; constituting a self contained unitcapable of :beingapplied and removed and, when removed from the mach1ne,:rema1n1ng as sucha 1111113." The stop screw37 not only prevents aceidentalremoval of therdrivers from the'nailfblocln'but it also limits/the separation'of theyplate35 from. 'the nail block tothat degreelwhich permits I it tobe slipped in and-outof the space over the driving head" 28'iwhen the latter is fully retracted. aA pin-or bolt 38 passing into one of the guideways from". the outside of the guide block 19, andintoa hole 39 in'theadjacent base of thenailblock secures the latter in place. Such boltor lockingpin is car ried by a fiexible spring 40 which normally holds the bolt in locking position, but can be 'flexed, as shown in Fig. 4, to. withdraw the 'bolt. 1. .i I locations corresponding to the pattern of the passages 33." Springs 36 surround the-drivers, or a s'uflicient number of them, and are con- Such'stop or rest comprises a tread abut- 'ment 41 arranged to bfear onthe tread end or face of the'heel, amta c'ooperatingback stop or rest12gis 'proyided to engage the rear of. the heel when the heel is so high and its tread so inclinedto f the direction inwhich force is applied bythe nail drivers as to :tend

to wedge'the shoeito the rear; These stops or lea;

rests are adj ustably' mounted in or on a holder 43 which in turn is adjustably mounted or plunger socketbya ring 53 secured in the mouth of the soclret and by a head 54 on its'own upper end, and is supported by a spring 55 surrounding it and confined bet-ween the ringb v andheadS l. A screw :56 is threaded through I thenpper part of the holde l3 intosaid socket and bears on the'end of the "bar 52, serving to adjust the stopfllfor heels of different heights. A lock nut 57 secures the adjustments. The cooperatingstoporfrest 42 is recessed'with flaring sides adapted te embrace partially therear part of a heel ofany size andhas -a shank 58 connected by a pivot clamp screw 59 with a slotted bar 60 which" in turn is attached to a lug 61 of the holderby a clamp screw 62. This clamp screw" passes through the slot in the bar 60-and per- "i mits the latter to be adjusted both length wiseand angularly. The lug 61 is so formed and disposed as to bring the middle part of the stop 41 in the longitudinal medial plane of the nail block or jack 32; The capacity for adjustment above describedof the stops all and 42 enablesthemto beset for heels of any height and inclination. Both are positioned according to the location of the heelf by moving the holder 43 to the front or rear,

for which purpose said'holder is provided with ribs 63 occupying gu deways 64011 the inner sides ofthe websor arms 44: and i5,

bridging across and secured to the outer ends of said webs or arms, said shank having'col-r The webs lars 67 to prevent end movement. or arms la: and d5 contain asufiiciency of material suitably disposed to render them amply rigid for the purposes of their user The slide 46 is norinally'raised by a spring 68 connected at one end to a hook 69 on the slide, and anchored at the other end toa book At its upper endit" 70 on the base frame. carries an anti-friction roll 71 bearing ona cam 72 secured to the shaft 18. An &1111 73 is secured to the same shaft'and-is'connected by a linl; 7e toa treadle 7 5 pivoted at? 6 to the base.

the position shown in Fig. 5.

the ti'eadle, such that it is Well removed fro A spring 77 connected to the. treadle and anchored on the base frame normally raises the treadle to the limit permitted by a stop 78, thereby placing the cam 72 in Arm 73 hassuitable length in-proportion to the throw of shaft 18, when inleither possiblejextrenie position; wherefore it will' oppose no 'appreciable resistance to depressionfof the treadle by the operatoi' sfoot or tollifting'of the tread-1e b-y'the spring'77.- I Y The stop .41 c.

I Theaxis of the cam 72 is substantiallyvertica'lly' over the center of'the roll 7'1;"or,"in

other words,"is substantiallyf in the line in which slide-46 is constrained to niove by its "guideways. In other respects,the cam is so, designed'thatits highestipart part of" long est radiusyi's directly overyand in ;,contact with the roll 71" when tlietreadle is fully depressed; J 'T;hus the line in 'which the reaction of theslideis exerted is thenr'normaLto the surface .of the Cain and passes through its centerofi'rotation; This forrn and'arrangement of tliecani isiof great-importance;as3itenable's the/"cam to takesthe entire thrust or reaction applied to the heel stops or rests when lthe "nails I are driven; 1 and :to; transmit tlllSlGLCtlOIl directly to; the rigid-frame of the machine, without any lifting effectonthe' treadles Thus the first'nained andxprincipal' "object of my invention is accomplished. 1 The res sta'nceropposed by the abutment stops to the 115111 driving force is not in any degree-Ilependentuponathe weightor (pressure applied by the operaitorto the' treadle, and the oper- 'at'oris reliieyed'of' joltnig due tozthe impact of the nail driving inec'hanism.1- I I The foregoing COIldltlOl'lStlltlt theax'is of the cam t 18 r directly abovethe stop; carrying slide, andnthat: the highest ipoin-t of the cam is in contact 'with the slide when theil atter is depressed, :are subject: tov some modification and variation: These conditions maybe e'X- actly orsubstantially"so; orithetcam axis may be slightly forward of the engaging; point j of the slide, sufiiciently to :briiig the: point of and an adjusting screw 65 is entered into atapped hole in the forward side of the holder? and its shank laid in a notch in a plate 66 longestiradius of the flcani' forward? oftthe highest; pOlllti Of theslideyor the cam maybe otherwise so formed as'to'obtain' 'tlie same "effect; in other words, 'I'inay'so form For locate tliecain thatthe fu-ll depression of the treadle carries lt-S'illlg'llQSl? point slightlyv beyon d the point at which it engages the" slide, although not enough so ,to permit: rise of the .heel stops rand" relaxation 'of the pressure exerted "by: them upon ztheliheel "The result of-thus carrying the Cain further onward'is to remove an'y'possibility ofs-the. upxthrust scription of construction 3 and relation of the i'lle inachinevniayube readily: -understo'odjifrointhe :Iforegoing -departs',,witliout further explanation?" :Itfin'ay,

be mentioned, however, that the driver -'oper'= atiiigcain 8 is driven with sufi'icient'; speed to strike substantially a' hamn er blowonthe nail driyers', and: that-inplace OfthB -"CQHL' other driver impelling meanszwellrknowne in its dead point, considered as a crank of theslthe a'rt' of nail driving machines may-beiisedfi R2 3 g It is'also to be understood that a clutch orother'starting and stopping device of a well known character is, or may be, applied to the cam shaft 7 or to the driving shaft 9to cause the nail driving'mechanism to remain I normally at rest and to be operatedgonly when the treadle 75 is depressed, or some other control device is operated. But as i the type of such starting andstopping mechanisms which I prefer to use in this machine is old and involves no invention of mine,

I have not illustrated it herein.

It may be further understood that the various parts of theimachine are, or may be, made of structural materialsusual in the construction. of shoe machinery, machine "comprising nail driving mechanism, a, rest for sustaining a heel against the force applled a bysaid nail driving mechanism, a slide carrytools, etc, according to the judgment of the machine designer or builder-L a V What I claim and desireito secure-by Letters Patent is: i

1. A machine for attaching hcels'to shoes ing said rest and movable to place the rest in and out of its sustaining position, a cam for V placlng and holding the slide and rest in signature. 7

framestructure, a guide'member secured to said structureqhavmg a recess in its upper beforenamedpassage, said block having pas sageways adapted tolreceive nails and nail dr1vers,nail drivers occupying said passageways and protruding from the lower end of the block, a platewith which the protruding ends of said drivers. areall engaged,.and means for connecting said plate to the nail block and limiting its distance from the bottom of the latter, while permitting its movement toward said bottom.

.In testimony whereof I have affixed ,.WILLIAM J. YOUNG.

said sustaining position, and operator-actuated means for so moving said cam, the cam having means for transmitting to'the machine structure substantially all of'the reactionof the rest. f

2. A machine for attaching heels to shoes comprising nail driving mechanism, arest for sustaining a heel against the force applied by said nail driving mechanism, a slide carry-i ing said rest and movable to place the rest in and out of its sustaining'pos'ition, a cam for placing and holdingthe slide and rest in said sustaining position, and operator-actuated means for so moving said cam, the cam being arranged with its pivot point and point of engagement with the slide substantially in line with the direction of'movement of that part of the slide which engages the cam, and

with its engaging surface extendingsquarely across said line of movements.

3. A machine for attaching heels to shoes comprising a nail driving mechanism; a rest for sustaining the heel against the force applied theretoby the s aid mechanism, movable in a given path to carry the rest into and out of its sustaming position, a cam-engaging a point on said slide,m0unted to turn about.

an axis lying approximately in thel'ine'of movement of said point, and operator-actu ated means for turning said cam to advance ,ator-actuated means of substantially all of such reaction." I 6 5 the slide into said sustaining position, the cam being thereby interposed inthedirect lineof reaction of the slide and its surface of greatest radius being then substantially normal to such line, thus relieving the oper- AJAQheehnailing machine comprising. 

